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https://issues.apache.org/jira/browse/HBASE-18368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094081#comment-16094081
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Guanghao Zhang commented on HBASE-18368:
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I thought one easy fix is change the java doc of ReturnCode.NEXT_ROW and the
implementation of FamilyFilter for branch-1. We should tell the filter
developer that even you return a NEXT_ROW, you still have chance to get a cell
from the same row's different column family. So if your filter need NEXT_ROW,
one method is use the reset method to know the row changed. Another method is
use CellUtil.matchingRows to know the row changed. The filter's implementation
should handle this internal. For master branch, there maybe need more discuss
about how to handle the NEXT_ROW return code in region level. Thanks.
> FilterList with multiple FamilyFilters concatenated by OR does not work.
> ------------------------------------------------------------------------
>
> Key: HBASE-18368
> URL: https://issues.apache.org/jira/browse/HBASE-18368
> Project: HBase
> Issue Type: Sub-task
> Components: Filters
> Affects Versions: 3.0.0, 2.0.0-alpha-1
> Reporter: Peter Somogyi
> Assignee: Allan Yang
> Priority: Critical
> Attachments: HBASE-18368.branch-1.patch,
> HBASE-18368.branch-1.v2.patch, HBASE-18368.branch-1.v3.patch,
> HBASE-18368.patch
>
>
> Scan gives back incomplete list if multiple filters are combined with OR /
> MUST_PASS_ONE.
> Using 2 FamilyFilters in a FilterList using MUST_PASS_ONE operator will give
> back results for only the first Filter.
> {code:java|title=Test code}
> @Test
> public void testFiltersWithOr() throws Exception {
> TableName tn = TableName.valueOf("MyTest");
> Table table = utility.createTable(tn, new String[] {"cf1", "cf2"});
> byte[] CF1 = Bytes.toBytes("cf1");
> byte[] CF2 = Bytes.toBytes("cf2");
> Put put1 = new Put(Bytes.toBytes("0"));
> put1.addColumn(CF1, Bytes.toBytes("col_a"), Bytes.toBytes(0));
> table.put(put1);
> Put put2 = new Put(Bytes.toBytes("0"));
> put2.addColumn(CF2, Bytes.toBytes("col_b"), Bytes.toBytes(0));
> table.put(put2);
> FamilyFilter filterCF1 = new FamilyFilter(CompareFilter.CompareOp.EQUAL,
> new BinaryComparator(CF1));
> FamilyFilter filterCF2 = new FamilyFilter(CompareFilter.CompareOp.EQUAL,
> new BinaryComparator(CF2));
> FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ONE);
> filterList.addFilter(filterCF1);
> filterList.addFilter(filterCF2);
> Scan scan = new Scan();
> scan.setFilter(filterList);
> ResultScanner scanner = table.getScanner(scan);
> System.out.println(filterList);
> for (Result rr = scanner.next(); rr != null; rr = scanner.next()) {
> System.out.println(rr);
> }
> }
> {code}
> {noformat:title=Output}
> FilterList OR (2/2): [FamilyFilter (EQUAL, cf1), FamilyFilter (EQUAL, cf2)]
> keyvalues={0/cf1:col_a/1499852754957/Put/vlen=4/seqid=0}
> {noformat}
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